
Zoo Med T5 HO ReptiSun 5.0 UVB, 12"
UVB light, a vital component of natural sunlight, is crucial for the health of most reptiles. It supports strong bone development and contributes to various other important bodily functions.
The Zoo Med T5 HO ReptiSun 5.0 UVB bulb, a 12" T5 HO fluorescent light, offers double the strength of traditional T8 ReptiSun 5.0 bulbs. This makes it ideal for delivering adequate UVB to reptiles with lower UVB needs in more spacious enclosures. Manufactured in Germany, this premium bulb is trusted by zoos, veterinarians, and leading reptile experts.
Usage Guidelines:
Mount the 12" Zoo Med T5 HO ReptiSun 5.0 UVB in a 14" Zoo Med ReptiSun T5 HO Terrarium Hood and position it above the basking zone. It is most effective for low-UVB reptiles in compact terrestrial terrariums ranging from 24-30" in length.
Ensure to replace the Zoo Med T5 HO ReptiSun 5.0 UVB bulb every 12 months for consistent UVB performance. For optimal monitoring, pair it with a Zoo Med Digital UV Index Radiometer or a Solarmeter 6.5.
UV Index Readings:
3" below lamp — UVI 2.6 - 3.5+
4" below lamp — UVI 2.6 - 3.5+
5" below lamp — UVI 2.6 - 3.5+
6" below lamp — UVI 1.0 - 2.6
7" below lamp — UVI 1.0 - 2.6
8" below lamp — UVI 1.0 - 2.6
10" below lamp — UVI 1.0 - 2.6
12" below lamp — UVI 0.7 - 1.0
14" below lamp — UVI 0.7 - 1.0
16" below lamp — UVI 0.7 - 1.0
18" below lamp — UVI 0.4 - 0.7
20" below lamp — UVI 0.4 - 0.7
22" below lamp — UVI 0.4 - 0.7
Reptiles have varying UVB needs. Refer to the Arcadia UV Index Lighting Guide to find the appropriate UVI for your reptile’s basking area.
Distance is calculated from the bulb’s tip to the basking spot or reptile. UVI values are approximate and can drop by

